{"instruction": "You are an expert in event argument extraction. Please extract event arguments and their roles from the input that conform to the schema definition, which already includes event trigger words. If an argument does not exist, return NAN or an empty dictionary. Please respond in the format of a JSON string.", "schema": [{"event_type": "ransom", "arguments": ["attacker", "place", "payment method", "price", "time", "damage amount", "tool", "attack pattern", "victim"]}], "input": "The ransomware attack , which Mayor Keisha Lance Bottoms characterized as \" a hostage situation , \" forced the city to shut down municipal courts and even prevented residents from paying bills online ."}
{"ransom": []}